A stone was thrown into a pond from 8 feet above the surface of the water in the pond. Justin wrote +8 feet to represent the height from which the stone was thrown. What does 0 represent in this situation?

the depth of water in the pond

the level at which the stone fell

the surface of the water in the pond

the level from which the stone was thrown

the depth of water in the pond

the level at which the stone fell

the surface of the water in the pond

the level from which the stone was thrown